Typewriting machine



April 22, 1930. v H. RESCH 1,755,190

TYPEWRITING MACHINE Filed July 30, 1926 ATTORNEY Patented Apr. 22, 1939 UNITED STATES HENRY RESCH, OF BAYONNE, NEW JERSEY, ASSIGNOR TO UIil'LDIElRWOOI) ELLIOTT FISHER COMPANY, OF 'NEW YORK, N. Y., A CORPORATION OF DELAWARE TYPEWRITING MACHINE Application filed July 30,

This invention relates to line-spacing means for typewriting machines, and is designed to increase the range of the usual maximum platen-throw of three line-spaces to a maximum throw of seven line-spaces, or more.

The device is particularly useful in typing reports or certain lists, such, for example, as stock-holders lists, in which the name and address of the stock-holder are typed in the 0 first column. This usually occupies three lines. In two or more other columns to the right of the sheet appear, in a single line, the number of shares held, the amount of dividends and the number of the bank-check mailed to the stock-holder, or other data.

When typing these single lines, it is necessary to ump the platen five, six or seven linespaces.

These multiple line-jumps on any one work-sheet are uniform, so all that is necessary in my device is to set the parts to a ga e for the desired throw of the platen and the operation is accurately accomplished by operating the line-space lever.

To turn the cam-plate on the hub of the ratchet, it ma be provided with an integral handle exten ing upwardly through a slot in a cap-plate resting on and secured to the left-end plate of the platen-frame. The handle near its top may carry an oiistanding spring-detent blade having a teat or knob which engages one of a series of holes formed on an arcuate line with the axis of the platen as its center, to yieldingly lock said handle in a desired set position, to cause the pawl to pick up the ratchet at any of seven points and rotate the platen correspondingly, when the line-space handle is operated. Said cam-plate handle may also carry a pointer to enable the operator to quickly set the mechanism for a desired linespace throw of the platen by referring to marked scale-lines inscribed on the aforesaid cap-plate. 45 Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a perspective view, showing my invention as applied to an Underwood typewriting machine;

1926. Serial No. 125,885.

Figure 2 is a side elevation of the device on a platen-frame, with the side of the cap plate omitted.

Figure 3 is a vertical sectional elevation taken about on the line 33 of Figure 2. a Figure 4 is a view similar to Figure 2, but with the line-space slide in its rearmost position, and the ratchet-control lever and its pawl at the uppermost or extreme seven-line platen-sweep position.

Figure 5 is a detail plan view of the capplate with the cam-plate handle and spring blade detent in section.

Figure 6 is a detail perspective view of a pointer-device employed.

Referring to the drawings, the platen '10 is mounted ,on an axle 11, journaled in a lefthand end plate 12 and in another end plate at the right of the machine, which is not shown.

For rotating the platen in line-space direction, a handle 13, provided with a fingerpiece 14, is pivoted at 15, on the carriageframe, and is further provided with an arm 16, to force a slide-plate 17 rearwardly.

This slide-plate operates in suitable guides in the end plate 12 and is held forwardlyby a pull spring 18 having one end connected to the macl1ineframe'and the other end connected to a pin 19 on the rear end of the slide-plate.

The laten may be rotated in either direction y a finger wheel or range the work-sheets at the rst typing position, after which the platen may be driven by the handle 13 and slide-plate 17 through a rock plate or lever 21, mounted to pivot on a screw or pin 22.

This rock-plate has an upwardly-directed short arm 23 forked as at 24 to receive the shank of a screw or headed pin 25 carried by a bracket 26, projecting outwardly from the rear end portion of the slide-plate 17 and upwardly through a slot 27, provided in a cap-plate 28 fastened, as by screws, to the end plate 12 of the platen-frame.

The longer arm 29 of the rock plate or lever {piece 20, to ar-" 21 is substantially diamond shaped and i 51 on the end, st its r mote end, the rock-plate carries, on s pivot-pin 31,21 line-space platen-feed or pawl 32, i-cs nose being pulled 1nwerdly by a spiral spring 33 to normally en gage the highspot or raised portion 3d of a eero-plate mounted loosely on a tubular 35 of a ratchet-wheel 37 which in turn is fixedly mounted on the pletenanle 11 to rotate therewith. v

The cam-piste is formed with an upwardlydirected handle 36' extending through a slot.

in the esp-piste 28 and is provided with s lingenpiece 38 and an ofistanding springdetent hlede 39, having a knob or test 40, arranged to interlock with one of a series of holes il, out through the side portion of the 5 shown is seven line-spaces, but, of course, by making slight, changes in the mechanism, a

still throw or sweep oi the platen may be achieved at a single operation of the linespace handle 13,

A pointer-device id is carried back and forth over the cap-plate 28 along the inner edge of the slot 37 with the handleBfi by a pin 5, which asses into a slot 46, provided in s downwar ly-directed tongue 47, having e channeled heed l8, engaging the cep-plate 28, at the inner edge of the slot 37, and this head is provided with anti-friction rolls 49, which hear on the under side of said plate to prevent binding or" the pointendevice in its movements with the handle,

The ratchet 3'4" is normally held a ainst rotabion by the usual springbacked detentarm 50, on the pivohpin 22. The driving movement of the pewl 32 is limited by e stop listen-frame.

1 It will e noted that the varying extents of movement of theiplaten do not vary the throw or driving movements of the line-space lever and its slide, the extent of these move- 1 ments being uniform.

The operation of the device will be clear from the foregoing. Upon rocking handle 36, so then indicator or pointer 44 is opposite the numeral corresponding to the Inn 7 oi iineepsces, it is desired to rotate the platen upon actuation of the line-s ace lever.

The handle is locked in position y teat enisering the corresponding hole 41, and the position of the hen e 36'will determine the magnitude of the angle through which the pawl 34? will slide ineifectively over raiwd portion-3d, and the point at which the pnwl will ride on said raised portion and engage the ratchet during the remainder of its movement, end thereby move the platen. By edjusting the cam-handle 36, therefore, the platen will be rotated from zero to seven linespaces (or more) upon actuation of the linecam-plate at a esired position, and means for rocking said lever to'permit the dog to engage a tooth of the ratchet to throw or sweep the platen through a predetermined line-space distance.

2. In a typewriting machine, the combination with a platen-frame, a platen revoluble therein and an axle on which the platen is mounted, of a cap-plate resting on and secured to said frame, said cap-plate being provided with aligned slots, scale-lines and an arcuate line of holes, e raschet-wheel having a tubular hub keyedto end axle, a cam-plate arranged at the side of the ratchet-wheel and mounted to turn on the hub thereof, said camplate having a high portion projecting beyond the teeth of said ratchet, a rock-lever, a dog pivoted to the end thereof, a spring to draw said dog intocontact with said high por tion but out of contact with said ratchet, means extending through one of the slots in said cap-plate for locking the cam-plate relatively to the ratchet-wheel, and means for operating said lever to cause the dog to engage a tooth of the ratchet-wheel and whirl the platen through a predetermined line-- space distance.

3. In a typewriting machine, the combination with a revoluhle platen having an axle, of a ratchet-wheel having an integral hub connected to said axle, a rocking lever having an arcuate slot spanning said hub and a pawl on the remote end thereof, means turnable on said hub for engaging the pawl to normally hold it out of engagement with the ratchet, means forcausing the pawl to engage a tooth of the ratchet when the lever is rocked, and means for operating said lever.

4. The combination with a revoluble platen having an axle, of a ratchet fixed on said axle and having a tubular hub, a cam-plate provided with a handle and having a rotary bearing on said hub, a spring-detent on said handle to lock it against movement, a rocklever having a slot to span said ratchet-hub, a pawl on said lever, means for causing the pawl to normally engage the cam-plate out of contact with the ratchenand means for caus- I to rotate the platen.

' cam-plate in a set 5. In a typewriting machine, the combination with a revoluble platen, of line-space mechanism for rotating said platen including a ratchet fixed on the platen-axle and having a tubular hub, a cam-plate turnable on said hub, a rock-lever having a slot through which .the hub passes, said lever having a short upwardly-directed forked arm and a forward ly-directed longer arm, a pawl on .the lastnamed arm, means for holding the pawl in contactwith the cam-plate out of contact with the ratchet, means for locking the camplate a ainst movement, and means for operating the rock-lever to cause the pawl to engage the ratchet and rotate the platen.

6. In a typewriting machine, the combination with a revoluble platen having an axle, of a ratchet, a cam-plate and a rock-lever arranged in face to face contact and relatively movable, said ratchet having a hub fixed to motion-multiplying means between said lever and said pawl to fproduce abnormally increased rotation o platen-frame, the shorter arm eing connected to said line-space-lever and the longer arm to said pawl, said last-mentioned arm'having a sl0t-connection with said axle, whereby it is guided by the latter durin oscillation.

A HENR RESCH.

the platen-axle and projecting through said Y cam-plate and rock-lever and acting as a bearing for the former, said camlate being provided with a high perip eral portion extending radially beyond the ratchet-teeth, and with an upwardly-extending handle, a cap-plate having slots in its top portion through which the handle and an arm of the rock-lever project and an arcuate line of holes in its side portion, a detent on the handle to engage one of said holes to lock it in a desired position, a pawl on the rock-lever normally resting on the high portion of the cam-plate, and means for operating said lever for causing the pawl to on age t e ratchet and turn the platen.

. In a typewriting machine, in combination with a line-space lever and its slide and a revoluble platen and its axle, a ratchet fast on said axle, said ratchet having a tubular hub, a cam-plate turnable on said hub, said cam-plate having a high spot extending beyond the ratchet-teeth and a handle formed therewith, a spring-detent blade secured in offstanding relation to said handle, said blade having a teat, a cap-plate having slots and an arcuate row of holes with one of which the teat is adapted to interlock to maintain the mova space slide, a rock-lever pivoted intermediate its ends and having an arm thereof connected to said bracket, a pawl pivoted to the other pawl. for engaging said ratchet-wheel, and

said platen said means including a lever eccentrically ivoted on the osition, a pointer-device I 1e with said andle and operating in a slot of the cam-plate, a bracket on the line- 

